• Partly sunny 56°
    Home Energy Efficiency Current Weather
    • Yesterday
      Temp
      58°
    • Wind
      Chill
      56°
    • Wind
      Speed
      9MPH
  • Today

    Apr 19

    Hi 67°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      9 mph
    Day Details >
  • Tomorrow

    Apr 20

    Hi 72°

    Partly sunny

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      7 mph
    Day Details >
  • Monday

    Apr 21

    Hi 65°

    Times of sun and clouds

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      9 mph
    Day Details >
Next

Expect showers Monday evening

4/19 4/20 Now: 10:59am
AM 10-2
  • 10am Partly sunny 55° 0%
  • 11am Partly sunny 58° 0%
  • 12pm Mostly sunny 62° 0%
  • 1pm Mostly sunny 64° 0%
  • 2pm Mostly sunny 66° 0%
PM 9-2
  • 9pm Mostly clear 54° 0%
  • 10pm Partly cloudy 54° 0%
  • 11pm Partly cloudy 53° 0%
  • 12am Partly cloudy 52° 0%
  • 1am Partly cloudy 52° 0%
  • 2am Partly cloudy 52° 0%
AM 3-8
  • 3am Partly cloudy 51° 0%
  • 4am Partly cloudy 51° 0%
  • 5am Mostly clear 51° 0%
  • 6am Mostly clear 50° 0%
  • 7am Mostly sunny 51° 0%
  • 8am Mostly sunny 52° 0%
Hourly Forecast >

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Top Story

Castro Valley Weather Report

San Francisco: No Rain in Sight, Morning Clouds to Break for Afternoon Sunshine

April 19, 2014; 4:06 AM ET

Through the holiday weekend, morning clouds will give way to mostly sunny skies. more >

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Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sat. Home Energy Efficiency

Sat. Degree Days

Sat. UV Index